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There will be problems with the inverter left for a long time - Reynolds
Most inverter brand products can rely on the heat generation of internal electrical components to remove moisture during normal use. If you don't have to do it for a long time, it's easy to get wet. The chip pins, penetrating resistors, capacitors, and inductor pins of the DIP package will be severely rusted or desoldered, resulting in on-resistance ...
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Frequency converter overcurrent problem treatment - Reynolds
General treatment methods for inverter overcurrent problems:
The output side of the inverter is a PWM voltage waveform, and after passing through the motor winding, the output current is approximately a sine wave, and lags behind the voltage by a phase viewpoint, which is determined by the power factor of the motor. The output current of the inverter passes through ...
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Reynolds inverter control method
The actuator commonly used in the industrial field of Reynolds inverter has good speed regulation performance and simple and convenient operation method. Therefore, it is widely used in the automation system.
Typical wiring method for the main circuit of a Reynolds frequency converter
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Reynolds assisted Sinopec Weirong shale gas project
With the rapid development of China's national economy, the supply and demand situation of oil and gas resources is becoming increasingly severe, and the import of oil and gas is increasing year by year, so it is urgent to expand the field of domestic oil and gas exploration and development. Strengthening the exploration and development of shale gas resources can make up for the lack of conventional oil and gas resources and promote the sustainability of the oil and gas industry.
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Classification and working principle of Reynolds inverter
Classification of Reynolds frequency converters:
There are many classification methods for Reynolds inverters, which can be divided into voltage-type inverters and current-type inverters according to the classification of the main circuit operation method; According to the classification of switching methods, it can be divided into PAM operation.
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Applications of Reynolds frequency converters
A frequency converter is a power electronic device that can change the frequency of an AC power source to control the speed and output power of a motor. Inverters are widely used in industry, aviation, metallurgy, petroleum, chemical industry, electric power and other fields.
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The basic principle of vector control of frequency converters
The basic principle of vector control is to control the excitation current and torque current of the asynchronous motor according to the principle of magnetic field orientation through the measurement and control of the stator current vector of the asynchronous motor, and then achieve the purpose of controlling the torque of the asynchronous motor. Specifically, the stator of the asynchronous motor ...
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Servo drive failure and solution
1. When the servo motor of the robot is running at a very low speed, it is fast and slow, just like a creeping machine. Low-speed prostrate servo motors are usually caused by low system gain. Please adjust the parameter N.10.N.11.N.12 to adjust the system gain appropriately, or the automatic gain adjustment function of the running driver ...
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Reynolds high-speed permanent magnet synchronous motor dedicated driver
The state proposes to "peak carbon emissions" by 2030 and complete "carbon neutrality" by 2060. Carbon neutrality is to try to reduce carbon dioxide emissions, and eventually achieve net zero emissions, that is, to make carbon dioxide emissions even offset.
However, due to economic development, CO2 emissions are stable ...
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Two Reynolds technologies were included in the "2020 Water Conservancy Technology Key Promotion Catalogue"
In May 2020, Reynolds was recommended by relevant departments to apply for the Ministry of Water Resources's "2020 Key Promotion and Guidance Catalogue of Advanced and Practical Water Conservancy Technologies".
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Frequency converter soft troubleshooting – Reynolds
Undervoltage is also a problem that we often encounter in application. Mainly because the voltage of the main circuit is too low (220V series is lower than 200V, 380V series is lower than 400V), the main reason: a certain way of the rectifier bridge is damaged or there is abnormal operation in the three ways of the thyristor, which may lead to the appearance of undervoltage problems, ...
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Reynolds inverter control panel and code function description
1. Clarification of the function of the control panel
1. FUN button; Press the FUN button to enter the settings menu F00;
2. Press and hold the up or down button to scroll to the code you need to set;
3. At this moment, press the FUN button to confirm, and adjust the entry parameters to the required value;
4. After the adjustment is completed, ...
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Soft-start starting method – Reynolds
1) Ramp boost soft start. This starting method is simple, does not have current closed-loop control, and only adjusts the conduction angle of the thyristor to make it add a certain function with time. The disadvantage is that because there is no current limit, in the process of motor starting, sometimes a large impulse current is generated.
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Reynolds product range models
JJR1000系列:
JJR1011;JJR1017;JJR1022;JJR1030;JJR1037;JJR1045;JJR1055;JJR1075;JJR1090;JJR1115;JJR1132;JJR1160;JJR1200;JJR1250;JJR1 ...
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Precautions for installation of Reynolds low-voltage inverters
1. Safety precautions
1. The primary requirement is to have certain electrical professional knowledge, and understand the job site, understand the equipment status, and have certain electrical operation technology.
2. Determine the electrical ...
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Motor overload fault solution - Reynolds
Causes of inverter failure:
1. The grid voltage is too low
2. The rated current of the motor is set incorrectly
3. The motor stall or load abrupt change is too large
4. Large horse-drawn trolley
Inverter solutions:
1 ...
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Structural characteristics of Reynolds RHY series inverter governor
1. Technology: (PC or PLC) is used to make the equipment complete the intelligent constant pressure variable supply water supply according to the requirements of water supply and fire protection;
2. High efficiency and energy saving: the system can set the pressure according to the demand, and the system actively adjusts the speed of the pump and the number of pumps according to the set pressure, so that the equipment can run in ...
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The cause of overheating of servo motor bearings - Reynolds
The motor itself:
1) The inner and outer rings of the bearing are too tightly cooperated.
2) There are problems with the shape and position tolerance of parts, such as the coaxiality of parts such as machine base, end cover, shaft and other parts is not good.
3) Improper selection of bearings.
4) The bearing is not smooth or the bearing is not clean, and there are impurities in the smooth grease. ...
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Inverter control method - Reynolds
The output voltage of low-voltage general frequency conversion is 380-650V, the output power is 0.75-400kW, and the operating frequency is 0-400Hz. Its control methods have gone through the following four generations. 1U/f=C Sinusoidal Pulse Width Modulation (SPWM) Manipulation MethodIts Characteristics ...
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Classification of Reynolds inverter types
1. Classified according to the input voltage level
According to the input voltage level, the inverter can be divided into low-voltage inverter and high-voltage inverter, and the low-voltage inverter is common in China with single-phase 220 V inverter, three-phase 220 V inverter, and i-phase 380 V inverter. High-voltage inverters are commonly used in 6 kV, 10 kV transformers.
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